Method and Device for Radiofrequency Communication
AssigneeSrett
InventorPhillipe Salamitou
Life of this patent
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Abstract
The invention concerns a method and a device for radiofrequency (RF) communication. According to the method, a communication can be set up between a reader (12) and an RF device (10) at least over a medium distance and over a short distance. The short distance communication is set up using an RF-ID transponder (20) and an antenna (16). In order to set up the medium distance communication, the reader (12) sends a command signal to the RF-ID transponder (20) in order to power up at least one microcontroller (24) and a transceiver (34). The microcontroller (24) sends to the reader (12), via the transceiver (34), a reply message comprising at least the identification of the device (10).
Claims20
A radiofrequency (RF) communication method according to which a communication can be set up between a reader and an RF device at least over a medium distance and over a short distance, the short distance communication being set up using an RF-ID transponder and an antenna, the medium distance communication being set up by the reader sending a command signal to the RF-ID transponder in order to switch at least one microcontroller and a transceiver from a passive state to an active state, said microcontroller sending to the reader, via said transceiver, a reply message comprising at least the identification of the RF device.
A device for radiofrequency (RF) communication with a reader, the device being able to communicate at least over a short distance and over a medium distance and comprising an antenna and an RF-ID transponder connected to said antenna, the device also including a programmed microcontroller, a transceiver connected to said microcontroller and an electrical power source, the short distance communication being carried out using said antenna and said RF-ID transponder said RF-ID transponder being arranged to detect a command signal sent by said reader and to connect at least said microcontroller to said power supply source when said command signal is detected, so that the medium distance communication can take place via said microcontroller and said transceiver.
A radiofrequency (RF) communication method according to which a communication can be set up between a reader and an RF device at least over a medium distance and over a short distance, comprising:
- using an RF-ID transponder and an antenna to set up the short distance communication;
- sending a command signal from the reader to the RF-ID transponder the medium distance communication being set up by the reader sending a command signal to the RF-ID transponder in order to switch at least one microcontroller and a transceiver from a passive state to an active state, said microcontroller sending to the reader, via said transceiver, a reply message comprising at least the identification of the RF device.
A device for radiofrequency (RF) communication with a reader, the device being able to communicate at least over a short distance and over a medium distance and comprising an antenna and an RF-ID transponder connected to said antenna, the device also including a programmed microcontroller, a transceiver connected to said microcontroller and an electrical power source, the short distance communication being carried out using said antenna and said RF-ID transponder said RF-ID transponder being arranged to detect a command signal sent by said reader, and to connect at least said microcontroller to said power supply source when said command signal is detected, so that the medium distance communication can take place via said microcontroller and said transceiver.
Dependencies are inferred from the claim text.